Carburetor engine: equipment and characteristics

2024 Author: Erin Ralphs | [email protected]. Last modified: 2024-02-19 11:42

The carbureted engine is a type of engine with independent ignition, as well as external mixture formation.

In this mechanism, a ready-made fuel-air mixture, which is most often produced in a carburetor, enters its cylinders. It can also be prepared in a gas-air mixer. And one more option: it is formed during the injection of fuel, which is sprayed by the nozzle.

Regardless of how the mixture is formed, and how many strokes are in the working cycle, the carburetor engine always performs its work in the same way. The combustible mixture, which is in a compressed state in the combustion chamber, is ignited at some point using an ignition system (most often an electric spark system). Ignition from a glow tube can also be used, but this is mainly in small-sized and inexpensive engines (for example, aircraft models). Laser or plasma ignition is currently under development.

I would like to note that the carburetor engine, or rather its types, depends on how many strokes are in its working cycle. Therefore, there are Otto engines - for them this cycle includes four half-turns of the crankshaftshaft, and it consists of four strokes, as well as two-stroke - their cycle includes two half-turns of the crankshaft. This type, it is worth noting, due to its simple design, has become widespread as an engine for various units and motorcycles.

Carburetor engine can be atmospheric. At it, the intake of fuel or air is carried out due to the vacuum in the cylinder. In addition, this process is carried out under pressure, which is created by a special compressor.

It should be noted that the carburetor internal combustion engine accepts almost any fuel. Once upon a time, alcohol was even used in its role. Also, naphtha, propane-butane or gasoline mixtures, lighting gas and ethyl alcohol can be used as a fuel liquid.

How is the carbureted engine completed? Its main part is a cylinder with a removable head. A piston is placed inside it, and piston rings are located on it in grooves specially designed for this. They do not allow gases to break through down. And they also prevent the oil from getting up.

With the help of a connecting rod and a pin, the piston is connected to the crankshaft crank, which, in turn, rotates in bearings that are installed in the engine crankcase. A mixture of gasoline and air enters the cylinder through the intake valve, and exhaust gases are released through the exhaust valve. And yet, you can not ignore the threaded holecylinder head. It contains a screwed-in spark plug. She is an electric spark that jumps between the electrodes, ignites the combustible mixture.

Despite the fact that the design of this mechanism is very simple, it is not so easy to fix it if there are any problems. Therefore, it will be necessary to carry out such a process as diagnosing a carburetor engine.